Variability in uplift, exhumation and crustal deformation along the Transantarctic Mountains front in southern Victoria Land, Antarctica
The Transantarctic Mountains (TAM) are an imposing topographic feature, forming the western shoulder of the Meso-Cenozoic West Antarctic Rift System. Although the TAM topography is similar to other continental rifts, some aspects such as the high topography and the transition in the mode of crustal...
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Online Access: | http://hdl.handle.net/11590/345629 https://doi.org/10.1016/j.tecto.2018.08.017 http://www.sciencedirect.com/science/journal/aip/00401951 |
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ftunivroma3iris:oai:iris.uniroma3.it:11590/345629 2024-02-27T08:33:47+00:00 Variability in uplift, exhumation and crustal deformation along the Transantarctic Mountains front in southern Victoria Land, Antarctica Olivetti, Valerio Rossetti, Federico Balestrieri, Maria Laura Pace, Donato Cornamusini, Gianluca Talarico, Franco Olivetti, Valerio Rossetti, Federico Balestrieri, Maria Laura Pace, Donato Cornamusini, Gianluca Talarico, Franco 2018 http://hdl.handle.net/11590/345629 https://doi.org/10.1016/j.tecto.2018.08.017 http://www.sciencedirect.com/science/journal/aip/00401951 eng eng info:eu-repo/semantics/altIdentifier/wos/WOS:000449241500013 volume:745 firstpage:229 lastpage:244 numberofpages:16 journal:TECTONOPHYSICS http://hdl.handle.net/11590/345629 doi:10.1016/j.tecto.2018.08.017 info:eu-repo/semantics/altIdentifier/scopus/2-s2.0-85052661628 http://www.sciencedirect.com/science/journal/aip/00401951 Antarctic topography Antarctica tectonic Fission track thermochronology Rift margin Transantarctic Mountain Geophysic Earth-Surface Processes info:eu-repo/semantics/article 2018 ftunivroma3iris https://doi.org/10.1016/j.tecto.2018.08.017 2024-01-31T17:39:31Z The Transantarctic Mountains (TAM) are an imposing topographic feature, forming the western shoulder of the Meso-Cenozoic West Antarctic Rift System. Although the TAM topography is similar to other continental rifts, some aspects such as the high topography and the transition in the mode of crustal extension from orthogonal to oblique rifting during the Cenozoic makes the TAM an anomalous rift margin. Here, we present a topography analysis of a 600 km long transect along the TAM front in southern Victoria Land combined with a large available thermochronological data-set to decode the tectonic signals hidden in the topography. An along-strike variability in tectonic, erosional and geomorphic characteristics is detected. We then focus our analysis on the Royal Society Range, where structural investigations were integrated with new fission track thermochronology in order to assess the morphotectonic evolution of the region. Fission-track data and topography of the Royal Society Range reveal remarkable differences with respect to the neighboring areas. Topography characteristics and thermal modeling suggest an increase in tectonic activity during late Eocene-early Oligocene times and structural analysis suggests that the Cenozoic rifting has been controlled by dextral transtension, as proposed for others sector of the TAM front. The detected along-strike variability in tectonic, erosional and geomorphic characteristics may reflect geodynamic complexities that should be taken into account in any further model of the TAM evolution. Article in Journal/Newspaper Antarc* Antarctic Antarctica Victoria Land Anagrafe della Ricerca d'Ateneo (Universitá degli studi Roma Tre) Antarctic Victoria Land Transantarctic Mountains Royal Society Range ENVELOPE(162.667,162.667,-78.167,-78.167) Tectonophysics 745 229 244 |
institution |
Open Polar |
collection |
Anagrafe della Ricerca d'Ateneo (Universitá degli studi Roma Tre) |
op_collection_id |
ftunivroma3iris |
language |
English |
topic |
Antarctic topography Antarctica tectonic Fission track thermochronology Rift margin Transantarctic Mountain Geophysic Earth-Surface Processes |
spellingShingle |
Antarctic topography Antarctica tectonic Fission track thermochronology Rift margin Transantarctic Mountain Geophysic Earth-Surface Processes Olivetti, Valerio Rossetti, Federico Balestrieri, Maria Laura Pace, Donato Cornamusini, Gianluca Talarico, Franco Variability in uplift, exhumation and crustal deformation along the Transantarctic Mountains front in southern Victoria Land, Antarctica |
topic_facet |
Antarctic topography Antarctica tectonic Fission track thermochronology Rift margin Transantarctic Mountain Geophysic Earth-Surface Processes |
description |
The Transantarctic Mountains (TAM) are an imposing topographic feature, forming the western shoulder of the Meso-Cenozoic West Antarctic Rift System. Although the TAM topography is similar to other continental rifts, some aspects such as the high topography and the transition in the mode of crustal extension from orthogonal to oblique rifting during the Cenozoic makes the TAM an anomalous rift margin. Here, we present a topography analysis of a 600 km long transect along the TAM front in southern Victoria Land combined with a large available thermochronological data-set to decode the tectonic signals hidden in the topography. An along-strike variability in tectonic, erosional and geomorphic characteristics is detected. We then focus our analysis on the Royal Society Range, where structural investigations were integrated with new fission track thermochronology in order to assess the morphotectonic evolution of the region. Fission-track data and topography of the Royal Society Range reveal remarkable differences with respect to the neighboring areas. Topography characteristics and thermal modeling suggest an increase in tectonic activity during late Eocene-early Oligocene times and structural analysis suggests that the Cenozoic rifting has been controlled by dextral transtension, as proposed for others sector of the TAM front. The detected along-strike variability in tectonic, erosional and geomorphic characteristics may reflect geodynamic complexities that should be taken into account in any further model of the TAM evolution. |
author2 |
Olivetti, Valerio Rossetti, Federico Balestrieri, Maria Laura Pace, Donato Cornamusini, Gianluca Talarico, Franco |
format |
Article in Journal/Newspaper |
author |
Olivetti, Valerio Rossetti, Federico Balestrieri, Maria Laura Pace, Donato Cornamusini, Gianluca Talarico, Franco |
author_facet |
Olivetti, Valerio Rossetti, Federico Balestrieri, Maria Laura Pace, Donato Cornamusini, Gianluca Talarico, Franco |
author_sort |
Olivetti, Valerio |
title |
Variability in uplift, exhumation and crustal deformation along the Transantarctic Mountains front in southern Victoria Land, Antarctica |
title_short |
Variability in uplift, exhumation and crustal deformation along the Transantarctic Mountains front in southern Victoria Land, Antarctica |
title_full |
Variability in uplift, exhumation and crustal deformation along the Transantarctic Mountains front in southern Victoria Land, Antarctica |
title_fullStr |
Variability in uplift, exhumation and crustal deformation along the Transantarctic Mountains front in southern Victoria Land, Antarctica |
title_full_unstemmed |
Variability in uplift, exhumation and crustal deformation along the Transantarctic Mountains front in southern Victoria Land, Antarctica |
title_sort |
variability in uplift, exhumation and crustal deformation along the transantarctic mountains front in southern victoria land, antarctica |
publishDate |
2018 |
url |
http://hdl.handle.net/11590/345629 https://doi.org/10.1016/j.tecto.2018.08.017 http://www.sciencedirect.com/science/journal/aip/00401951 |
long_lat |
ENVELOPE(162.667,162.667,-78.167,-78.167) |
geographic |
Antarctic Victoria Land Transantarctic Mountains Royal Society Range |
geographic_facet |
Antarctic Victoria Land Transantarctic Mountains Royal Society Range |
genre |
Antarc* Antarctic Antarctica Victoria Land |
genre_facet |
Antarc* Antarctic Antarctica Victoria Land |
op_relation |
info:eu-repo/semantics/altIdentifier/wos/WOS:000449241500013 volume:745 firstpage:229 lastpage:244 numberofpages:16 journal:TECTONOPHYSICS http://hdl.handle.net/11590/345629 doi:10.1016/j.tecto.2018.08.017 info:eu-repo/semantics/altIdentifier/scopus/2-s2.0-85052661628 http://www.sciencedirect.com/science/journal/aip/00401951 |
op_doi |
https://doi.org/10.1016/j.tecto.2018.08.017 |
container_title |
Tectonophysics |
container_volume |
745 |
container_start_page |
229 |
op_container_end_page |
244 |
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1792047855504982016 |